lyx_mirror/src/Counters.cpp

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/**
* \file Counters.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bj<EFBFBD>nnes
* \author Martin Vermeer
* \author Andr<EFBFBD> P<EFBFBD>nitz
* \author Richard Heck (roman numerals)
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "Counters.h"
#include "support/convert.h"
#include "support/debug.h"
#include "support/lstrings.h"
#include <boost/assert.hpp>
#include <sstream>
using namespace std;
using namespace lyx::support;
namespace lyx {
Counter::Counter()
{
reset();
}
Counter::Counter(docstring const & mc, docstring const & ls,
docstring const & lsa)
: master_(mc), labelstring_(ls), labelstringappendix_(lsa)
{
reset();
}
void Counter::set(int v)
{
value_ = v;
}
void Counter::addto(int v)
{
value_ += v;
}
int Counter::value() const
{
return value_;
}
void Counter::step()
{
++value_;
}
void Counter::reset()
{
value_ = 0;
}
docstring const & Counter::master() const
{
return master_;
}
docstring const & Counter::labelString() const
{
return labelstring_;
}
docstring const & Counter::labelStringAppendix() const
{
return labelstringappendix_;
}
void Counters::newCounter(docstring const & newc,
docstring const & masterc,
docstring const & ls,
docstring const & lsa)
{
if (!masterc.empty() && !hasCounter(masterc)) {
lyxerr << "Master counter does not exist: "
<< to_utf8(masterc)
<< endl;
return;
}
counterList[newc] = Counter(masterc, ls, lsa);
}
bool Counters::hasCounter(docstring const & c) const
{
return counterList.find(c) != counterList.end();
}
void Counters::set(docstring const & ctr, int const val)
{
CounterList::iterator const it = counterList.find(ctr);
if (it == counterList.end()) {
lyxerr << "set: Counter does not exist: "
<< to_utf8(ctr) << endl;
return;
}
it->second.set(val);
}
void Counters::addto(docstring const & ctr, int const val)
{
CounterList::iterator const it = counterList.find(ctr);
if (it == counterList.end()) {
lyxerr << "addto: Counter does not exist: "
<< to_utf8(ctr) << endl;
return;
}
it->second.addto(val);
}
int Counters::value(docstring const & ctr) const
{
CounterList::const_iterator const cit = counterList.find(ctr);
if (cit == counterList.end()) {
lyxerr << "value: Counter does not exist: "
<< to_utf8(ctr) << endl;
return 0;
}
return cit->second.value();
}
void Counters::step(docstring const & ctr)
{
CounterList::iterator it = counterList.find(ctr);
if (it == counterList.end()) {
lyxerr << "step: Counter does not exist: "
<< to_utf8(ctr) << endl;
return;
}
it->second.step();
it = counterList.begin();
CounterList::iterator const end = counterList.end();
for (; it != end; ++it) {
if (it->second.master() == ctr) {
it->second.reset();
}
}
}
void Counters::reset()
{
appendix_ = false;
subfloat_ = false;
current_float_.erase();
CounterList::iterator it = counterList.begin();
CounterList::iterator const end = counterList.end();
for (; it != end; ++it) {
it->second.reset();
}
}
void Counters::reset(docstring const & match)
{
BOOST_ASSERT(!match.empty());
CounterList::iterator it = counterList.begin();
CounterList::iterator end = counterList.end();
for (; it != end; ++it) {
if (it->first.find(match) != string::npos)
it->second.reset();
}
}
void Counters::copy(Counters & from, Counters & to, docstring const & match)
{
CounterList::iterator it = counterList.begin();
CounterList::iterator end = counterList.end();
for (; it != end; ++it) {
if (it->first.find(match) != string::npos || match == "") {
to.set(it->first, from.value(it->first));
}
}
}
namespace {
char loweralphaCounter(int const n)
{
if (n < 1 || n > 26)
return '?';
return 'a' + n - 1;
}
char alphaCounter(int const n)
{
if (n < 1 || n > 26)
return '?';
return 'A' + n - 1;
}
char hebrewCounter(int const n)
{
static const char hebrew[22] = {
'\xe0', '\xe1', '\xe2', '\xe3', '\xe4', '\xe5', '\xe6', '\xe7', '\xe8',
'\xe9', '\xeb', '\xec', '\xee', '\xf0', '\xf1', '\xf2', '\xf4', '\xf6',
'\xf7', '\xf8', '\xf9', '\xfa'
};
if (n < 1 || n > 22)
return '?';
return hebrew[n - 1];
}
//On the special cases, see http://mathworld.wolfram.com/RomanNumerals.html
//and for a list of roman numerals up to and including 3999, see
//http://www.research.att.com/~njas/sequences/a006968.txt. (Thanks to Joost
//for this info.)
docstring const romanCounter(int const n)
{
static char const * const ones[9] = {
"I", "II", "III", "IV", "V",
"VI", "VII", "VIII", "IX"
};
static char const * const tens[9] = {
"X", "XX", "XXX", "XL", "L",
"LX", "LXX", "LXXX", "XC"
};
static char const * const hunds[9] = {
"C", "CC", "CCC", "CD", "D",
"DC", "DCC", "DCCC", "CM"
};
if (n > 1000 || n < 1)
return from_ascii("??");
int val = n;
string roman;
switch (n) {
//special cases
case 900:
roman = "CM";
break;
case 400:
roman = "CD";
break;
default:
if (val >= 100) {
int hundreds = val / 100;
roman = hunds[hundreds - 1];
val = val % 100;
}
if (val >= 10) {
switch (val) {
//special case
case 90:
roman = roman + "XC";
val = 0; //skip next
break;
default:
int tensnum = val / 10;
roman = roman + tens[tensnum - 1];
val = val % 10;
} // end switch
} // end tens
if (val > 0)
roman = roman + ones[val -1];
}
return from_ascii(roman);
}
docstring const lowerromanCounter(int const n)
{
return lowercase(romanCounter(n));
}
} // namespace anon
docstring Counters::labelItem(docstring const & ctr,
docstring const & numbertype)
{
CounterList::const_iterator const cit = counterList.find(ctr);
if (cit == counterList.end()) {
lyxerr << "Counter "
<< to_utf8(ctr)
<< " does not exist." << endl;
return docstring();
}
int val = cit->second.value();
if (numbertype == "hebrew")
return docstring(1, hebrewCounter(val));
if (numbertype == "alph")
return docstring(1, loweralphaCounter(val));
if (numbertype == "Alph")
return docstring(1, alphaCounter(val));
if (numbertype == "roman")
return lowerromanCounter(val);
if (numbertype == "Roman")
return romanCounter(val);
return convert<docstring>(val);
}
docstring Counters::theCounter(docstring const & counter)
{
std::set<docstring> callers;
return theCounter(counter, callers);
}
docstring Counters::theCounter(docstring const & counter,
std::set<docstring> & callers)
{
if (!hasCounter(counter))
return from_ascii("??");
docstring label;
if (callers.find(counter) == callers.end()) {
pair<std::set<docstring>::iterator, bool> result = callers.insert(counter);
Counter const & c = counterList[counter];
docstring ls = appendix() ? c.labelStringAppendix() : c.labelString();
if (ls.empty()) {
if (!c.master().empty())
ls = from_ascii("\\the") + c.master() + from_ascii(".");
ls += from_ascii("\\arabic{") + counter + "}";
}
label = counterLabel(ls, &callers);
callers.erase(result.first);
} else {
// recursion detected
lyxerr << "Warning: Recursion in label for counter `"
<< counter << "' detected"
<< endl;
}
return label;
}
docstring Counters::counterLabel(docstring const & format,
std::set<docstring> * callers)
{
docstring label = format;
// FIXME: Using regexps would be better, but we compile boost without
// wide regexps currently.
while (true) {
//lyxerr << "label=" << to_utf8(label) << endl;
size_t const i = label.find(from_ascii("\\the"), 0);
if (i == docstring::npos)
break;
size_t j = i + 4;
size_t k = j;
while (k < label.size() && lowercase(label[k]) >= 'a'
&& lowercase(label[k]) <= 'z')
++k;
docstring counter = label.substr(j, k - j);
docstring repl = callers? theCounter(counter, *callers):
theCounter(counter);
label.replace(i, k - j + 4, repl);
}
while (true) {
//lyxerr << "label=" << to_utf8(label) << endl;
size_t const i = label.find('\\', 0);
if (i == docstring::npos)
break;
size_t const j = label.find('{', i + 1);
if (j == docstring::npos)
break;
size_t const k = label.find('}', j + 1);
if (k == docstring::npos)
break;
docstring const numbertype(label, i + 1, j - i - 1);
docstring const counter(label, j + 1, k - j - 1);
docstring const rep = labelItem(counter, numbertype);
label = docstring(label, 0, i) + rep
+ docstring(label, k + 1, docstring::npos);
}
//lyxerr << "DONE! label=" << to_utf8(label) << endl;
return label;
}
} // namespace lyx